h8300: IRQ handling update

- add missing file and declare.
- remove unused file and macros.
- some cleanup.

Signed-off-by: Yoshinori Sato <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/h8300/kernel/irq.c

···
 
 extern unsigned long *interrupt_redirect_table;
 extern const int h8300_saved_vectors[];
-extern const unsigned long h8300_trap_table[];
+extern const h8300_vector h8300_trap_table[];
 int h8300_enable_irq_pin(unsigned int irq);
 void h8300_disable_irq_pin(unsigned int irq);
 
···
 {
 	int i;
 	unsigned long *ramvec,*ramvec_p;
-	const unsigned long *trap_entry;
+	const h8300_vector *trap_entry;
 	const int *saved_vector;
 
 	ramvec = get_vector_address();

arch/h8300/platform/h8300h/Makefile

···
 # Reuse any files we can from the H8/300H
 #
 
-obj-y := irq_pin.o ptrace_h8300h.o
+obj-y := irq.o ptrace_h8300h.o

arch/h8300/platform/h8300h/irq.c

···
+/*
+ * Interrupt handling H8/300H depend.
+ * Yoshinori Sato <[e-mail]>
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/errno.h>
+
+#include <asm/ptrace.h>
+#include <asm/traps.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/gpio.h>
+#include <asm/regs306x.h>
+
+const int __initdata h8300_saved_vectors[] = {
+#if defined(CONFIG_GDB_DEBUG)
+	TRAP3_VEC,	/* TRAPA #3 is GDB breakpoint */
+#endif
+	-1,
+};
+
+const h8300_vector __initdata h8300_trap_table[] = {
+	0, 0, 0, 0, 0, 0, 0, 0,
+	system_call,
+	0,
+	0,
+	trace_break,
+};
+
+int h8300_enable_irq_pin(unsigned int irq)
+{
+	int bitmask;
+	if (irq < EXT_IRQ0 || irq > EXT_IRQ5)
+		return 0;
+
+	/* initialize IRQ pin */
+	bitmask = 1 << (irq - EXT_IRQ0);
+	switch(irq) {
+	case EXT_IRQ0:
+	case EXT_IRQ1:
+	case EXT_IRQ2:
+	case EXT_IRQ3:
+		if (H8300_GPIO_RESERVE(H8300_GPIO_P8, bitmask) == 0)
+			return -EBUSY;
+		H8300_GPIO_DDR(H8300_GPIO_P8, bitmask, H8300_GPIO_INPUT);
+		break;
+	case EXT_IRQ4:
+	case EXT_IRQ5:
+		if (H8300_GPIO_RESERVE(H8300_GPIO_P9, bitmask) == 0)
+			return -EBUSY;
+		H8300_GPIO_DDR(H8300_GPIO_P9, bitmask, H8300_GPIO_INPUT);
+		break;
+	}
+
+	return 0;
+}
+
+void h8300_disable_irq_pin(unsigned int irq)
+{
+	int bitmask;
+	if (irq < EXT_IRQ0 || irq > EXT_IRQ5)
+		return;
+
+	/* disable interrupt & release IRQ pin */
+	bitmask = 1 << (irq - EXT_IRQ0);
+	switch(irq) {
+	case EXT_IRQ0:
+	case EXT_IRQ1:
+	case EXT_IRQ2:
+	case EXT_IRQ3:
+		*(volatile unsigned char *)IER &= ~bitmask;
+		H8300_GPIO_FREE(H8300_GPIO_P8, bitmask);
+		break ;
+	case EXT_IRQ4:
+	case EXT_IRQ5:
+		*(volatile unsigned char *)IER &= ~bitmask;
+		H8300_GPIO_FREE(H8300_GPIO_P9, bitmask);
+		break;
+	}
+}

arch/h8300/platform/h8s/ints.c

···
-/*
- * linux/arch/h8300/platform/h8s/ints.c
- *
- * Yoshinori Sato <[e-mail]>
- *
- * Based on linux/arch/$(ARCH)/platform/$(PLATFORM)/ints.c
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file COPYING in the main directory of this archive
- * for more details.
- *
- * Copyright 1996 Roman Zippel
- * Copyright 1999 D. Jeff Dionne <[e-mail]>
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/kernel_stat.h>
-#include <linux/seq_file.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/bootmem.h>
-#include <linux/random.h>
-#include <linux/hardirq.h>
-
-#include <asm/system.h>
-#include <asm/irq.h>
-#include <asm/traps.h>
-#include <asm/io.h>
-#include <asm/setup.h>
-#include <asm/gpio.h>
-#include <asm/regs267x.h>
-#include <asm/errno.h>
-
-/*
- * This structure has only 4 elements for speed reasons
- */
-typedef struct irq_handler {
-	irqreturn_t (*handler)(int, void *, struct pt_regs *);
-	int         flags;
-	int         count;
-	void	    *dev_id;
-	const char  *devname;
-} irq_handler_t;
-
-static irq_handler_t *irq_list[NR_IRQS];
-
-/* IRQ pin assignment */
-struct irq_pins {
-	unsigned char port_no;
-	unsigned char bit_no;
-};
-/* ISTR = 0 */
-static const struct irq_pins irq_assign_table0[16]={
-        {H8300_GPIO_P5,H8300_GPIO_B0},{H8300_GPIO_P5,H8300_GPIO_B1},
-	{H8300_GPIO_P5,H8300_GPIO_B2},{H8300_GPIO_P5,H8300_GPIO_B3},
-	{H8300_GPIO_P5,H8300_GPIO_B4},{H8300_GPIO_P5,H8300_GPIO_B5},
-	{H8300_GPIO_P5,H8300_GPIO_B6},{H8300_GPIO_P5,H8300_GPIO_B7},
-	{H8300_GPIO_P6,H8300_GPIO_B0},{H8300_GPIO_P6,H8300_GPIO_B1},
-	{H8300_GPIO_P6,H8300_GPIO_B2},{H8300_GPIO_P6,H8300_GPIO_B3},
-	{H8300_GPIO_P6,H8300_GPIO_B4},{H8300_GPIO_P6,H8300_GPIO_B5},
-	{H8300_GPIO_PF,H8300_GPIO_B1},{H8300_GPIO_PF,H8300_GPIO_B2},
-};
-/* ISTR = 1 */
-static const struct irq_pins irq_assign_table1[16]={
-	{H8300_GPIO_P8,H8300_GPIO_B0},{H8300_GPIO_P8,H8300_GPIO_B1},
-	{H8300_GPIO_P8,H8300_GPIO_B2},{H8300_GPIO_P8,H8300_GPIO_B3},
-	{H8300_GPIO_P8,H8300_GPIO_B4},{H8300_GPIO_P8,H8300_GPIO_B5},
-	{H8300_GPIO_PH,H8300_GPIO_B2},{H8300_GPIO_PH,H8300_GPIO_B3},
-	{H8300_GPIO_P2,H8300_GPIO_B0},{H8300_GPIO_P2,H8300_GPIO_B1},
-	{H8300_GPIO_P2,H8300_GPIO_B2},{H8300_GPIO_P2,H8300_GPIO_B3},
-	{H8300_GPIO_P2,H8300_GPIO_B4},{H8300_GPIO_P2,H8300_GPIO_B5},
-	{H8300_GPIO_P2,H8300_GPIO_B6},{H8300_GPIO_P2,H8300_GPIO_B7},
-};
-
-static short use_kmalloc = 0;
-
-extern unsigned long *interrupt_redirect_table;
-
-#define CPU_VECTOR ((unsigned long *)0x000000)
-#define ADDR_MASK (0xffffff)
-
-static inline unsigned long *get_vector_address(void)
-{
-	volatile unsigned long *rom_vector = CPU_VECTOR;
-	unsigned long base,tmp;
-	int vec_no;
-
-	base = rom_vector[EXT_IRQ0] & ADDR_MASK;
-	
-	/* check romvector format */
-	for (vec_no = EXT_IRQ1; vec_no <= EXT_IRQ15; vec_no++) {
-		if ((base+(vec_no - EXT_IRQ0)*4) != (rom_vector[vec_no] & ADDR_MASK))
-			return NULL;
-	}
-
-	/* ramvector base address */
-	base -= EXT_IRQ0*4;
-
-	/* writerble check */
-	tmp = ~(*(unsigned long *)base);
-	(*(unsigned long *)base) = tmp;
-	if ((*(unsigned long *)base) != tmp)
-		return NULL;
-	return (unsigned long *)base;
-}
-
-void __init init_IRQ(void)
-{
-#if defined(CONFIG_RAMKERNEL)
-	int i;
-	unsigned long *ramvec,*ramvec_p;
-	unsigned long break_vec;
-
-	ramvec = get_vector_address();
-	if (ramvec == NULL)
-		panic("interrupt vector serup failed.");
-	else
-		printk("virtual vector at 0x%08lx\n",(unsigned long)ramvec);
-
-#if defined(CONFIG_GDB_DEBUG)
-	/* save original break vector */
-	break_vec = ramvec[TRAP3_VEC];
-#else
-	break_vec = VECTOR(trace_break);
-#endif
-
-	/* create redirect table */
-	for (ramvec_p = ramvec, i = 0; i < NR_IRQS; i++)
-		*ramvec_p++ = REDIRECT(interrupt_entry);
-
-	/* set special vector */
-	ramvec[TRAP0_VEC] = VECTOR(system_call);
-	ramvec[TRAP3_VEC] = break_vec;
-	interrupt_redirect_table = ramvec;
-#ifdef DUMP_VECTOR
-	ramvec_p = ramvec;
-	for (i = 0; i < NR_IRQS; i++) {
-		if ((i % 8) == 0)
-			printk("\n%p: ",ramvec_p);
-		printk("%p ",*ramvec_p);
-		ramvec_p++;
-	}
-	printk("\n");
-#endif
-#endif
-}
-
-int request_irq(unsigned int irq,
-		irqreturn_t (*handler)(int, void *, struct pt_regs *),
-                unsigned long flags, const char *devname, void *dev_id)
-{
-	unsigned short ptn = 1 << (irq - EXT_IRQ0);
-	irq_handler_t *irq_handle;
-	if (irq < 0 || irq >= NR_IRQS) {
-		printk("Incorrect IRQ %d from %s\n", irq, devname);
-		return -EINVAL;
-	}
-	if (irq_list[irq])
-		return -EBUSY; /* already used */
-	if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
-		/* initialize IRQ pin */
-		unsigned int port_no,bit_no;
-		if (*(volatile unsigned short *)ITSR & ptn) {
-			port_no = irq_assign_table1[irq - EXT_IRQ0].port_no;
-			bit_no = irq_assign_table1[irq - EXT_IRQ0].bit_no;
-		} else {
-			port_no = irq_assign_table0[irq - EXT_IRQ0].port_no;
-			bit_no = irq_assign_table0[irq - EXT_IRQ0].bit_no;
-		}
-		if (H8300_GPIO_RESERVE(port_no, bit_no) == 0)
-			return -EBUSY;                   /* pin already use */
-		H8300_GPIO_DDR(port_no, bit_no, H8300_GPIO_INPUT);
-		*(volatile unsigned short *)ISR &= ~ptn; /* ISR clear */
-	}		
-
-	if (use_kmalloc)
-		irq_handle = kmalloc(sizeof(irq_handler_t), GFP_ATOMIC);
-	else {
-		/* use bootmem allocator */
-		irq_handle = (irq_handler_t *)alloc_bootmem(sizeof(irq_handler_t));
-		irq_handle = (irq_handler_t *)((unsigned long)irq_handle | 0x80000000);
-	}
-
-	if (irq_handle == NULL)
-		return -ENOMEM;
-
-	irq_handle->handler = handler;
-	irq_handle->flags   = flags;
-	irq_handle->count   = 0;
-	irq_handle->dev_id  = dev_id;
-	irq_handle->devname = devname;
-	irq_list[irq] = irq_handle;
-	if (irq_handle->flags & IRQF_SAMPLE_RANDOM)
-		rand_initialize_irq(irq);
-	
-	/* enable interrupt */
-	/* compatible i386  */
-	if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)
-		*(volatile unsigned short *)IER |= ptn;
-	return 0;
-}
-
-EXPORT_SYMBOL(request_irq);
-
-void free_irq(unsigned int irq, void *dev_id)
-{
-	if (irq >= NR_IRQS)
-		return;
-	if (irq_list[irq]->dev_id != dev_id)
-		printk("%s: Removing probably wrong IRQ %d from %s\n",
-		       __FUNCTION__, irq, irq_list[irq]->devname);
-	if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
-		/* disable interrupt & release IRQ pin */
-		unsigned short port_no,bit_no;
-		*(volatile unsigned short *)ISR &= ~(1 << (irq - EXT_IRQ0));
-		*(volatile unsigned short *)IER |= 1 << (irq - EXT_IRQ0);
-		if (*(volatile unsigned short *)ITSR & (1 << (irq - EXT_IRQ0))) {
-			port_no = irq_assign_table1[irq - EXT_IRQ0].port_no;
-			bit_no = irq_assign_table1[irq - EXT_IRQ0].bit_no;
-		} else {
-			port_no = irq_assign_table0[irq - EXT_IRQ0].port_no;
-			bit_no = irq_assign_table0[irq - EXT_IRQ0].bit_no;
-		}
-		H8300_GPIO_FREE(port_no, bit_no);
-	}
-	if (((unsigned long)irq_list[irq] & 0x80000000) == 0) {
-		kfree(irq_list[irq]);
-		irq_list[irq] = NULL;
-	}
-}
-
-EXPORT_SYMBOL(free_irq);
-
-unsigned long probe_irq_on (void)
-{
-	return 0;
-}
-
-EXPORT_SYMBOL(probe_irq_on);
-
-int probe_irq_off (unsigned long irqs)
-{
-	return 0;
-}
-
-EXPORT_SYMBOL(probe_irq_off);
-
-void enable_irq(unsigned int irq)
-{
-	if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)
-		*(volatile unsigned short *)IER |= 1 << (irq - EXT_IRQ0);
-}
-
-void disable_irq(unsigned int irq)
-{
-	if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)
-		*(volatile unsigned short *)IER &= ~(1 << (irq - EXT_IRQ0));
-}
-
-asmlinkage void process_int(unsigned long vec, struct pt_regs *fp)
-{
-	irq_enter();
-	/* ISR clear       */
-	/* compatible i386 */
-	if (vec >= EXT_IRQ0 && vec <= EXT_IRQ15)
-		*(volatile unsigned short *)ISR &= ~(1 << (vec - EXT_IRQ0));
-	if (vec < NR_IRQS) {
-		if (irq_list[vec]) {
-			irq_list[vec]->handler(vec, irq_list[vec]->dev_id, fp);
-			irq_list[vec]->count++;
-			if (irq_list[vec]->flags & IRQF_SAMPLE_RANDOM)
-				add_interrupt_randomness(vec);
-		}
-	} else {
-		BUG();
-	}
-	irq_exit();
-}
-
-int show_interrupts(struct seq_file *p, void *v)
-{
-	int i = *(loff_t *) v;
-
-	if ((i < NR_IRQS) && (irq_list[i] !=NULL)) {
-		seq_printf(p, "%3d: %10u ",i,irq_list[i]->count);
-		seq_printf(p, "%s\n", irq_list[i]->devname);
-	}
-
-	return 0;
-}
-
-void init_irq_proc(void)
-{
-}
-
-static int __init enable_kmalloc(void)
-{
-	use_kmalloc = 1;
-	return 0;
-}
-core_initcall(enable_kmalloc);

arch/h8300/platform/h8s/ints_h8s.c arch/h8300/platform/h8s/irq.c

···
 };
 
 /* trap entry table */
-const unsigned long __initdata h8300_trap_table[NR_TRAPS]={
+const H8300_VECTOR __initdata h8300_trap_table[] = {
 	0,0,0,0,0,
-	(unsigned long)trace_break,  /* TRACE */
+	trace_break,  /* TRACE */
 	0,0,
-	(unsigned long)system_call,  /* TRAPA #0 */
+	system_call,  /* TRAPA #0 */
 	0,0,0,0,0,0,0
 };
 
···
 	{H8300_GPIO_P6,H8300_GPIO_B2},{H8300_GPIO_P6,H8300_GPIO_B3},
 	{H8300_GPIO_P6,H8300_GPIO_B4},{H8300_GPIO_P6,H8300_GPIO_B5},
 	{H8300_GPIO_PF,H8300_GPIO_B1},{H8300_GPIO_PF,H8300_GPIO_B2},
-}; 
+};
 /* ISTR = 1 */
 static const struct irq_pins irq_assign_table1[16]={
 	{H8300_GPIO_P8,H8300_GPIO_B0},{H8300_GPIO_P8,H8300_GPIO_B1},

include/asm-h8300/hardirq.h

···
 
 #include <linux/irq_cpustat.h>	/* Standard mappings for irq_cpustat_t above */
 
+extern void ack_bad_irq(unsigned int irq);
+
 #define HARDIRQ_BITS	8
 
 /*

include/asm-h8300/irq.h

···
 
 #include <asm/ptrace.h>
 
-#if defined(__H8300H__)
+#if defined(CONFIG_CPU_H8300H)
 #define NR_IRQS 64
 #define EXT_IRQ0 12
 #define EXT_IRQ1 13
···
 #define EXT_IRQ6 18
 #define EXT_IRQ7 19
 #define EXT_IRQS 5
-
-#include <asm/regs306x.h>
-#define h8300_clear_isr(irq)                                                \
-do {                                                                        \
-	if (irq >= EXT_IRQ0 && irq <= EXT_IRQ5)                             \
-		*(volatile unsigned char *)ISR &= ~(1 << (irq - EXT_IRQ0)); \
-} while(0)
-
 #define IER_REGS *(volatile unsigned char *)IER
 #endif
 #if defined(CONFIG_CPU_H8S)
···
 #define EXT_IRQ15 31
 #define EXT_IRQS 15
 
-#include <asm/regs267x.h>
-#define h8300_clear_isr(irq)                                                 \
-do {                                                                         \
-	if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)                             \
-		*(volatile unsigned short *)ISR &= ~(1 << (irq - EXT_IRQ0)); \
-} while(0)
-
 #define IER_REGS *(volatile unsigned short *)IER
 #endif
 
···
 {
 	return irq;
 }
+
+typedef void (*h8300_vector)(void);
 
 #endif /* _H8300_IRQ_H_ */